EP 0347054 B1 19930317 - LIGHT INTENSITY CORRELATING APPARATUS
Title (en)
LIGHT INTENSITY CORRELATING APPARATUS
Publication
Application
Priority
JP 13205088 A 19880530
Abstract (en)
[origin: EP0347054A2] An apparatus for measuring an autocorrelation waveform of the intensity of an input light beam comprises a beam splitting means (40) for dividing the input light beam into two light beams, a photoelectric converter (42) for converting one of the divided beams into an electrical signal, an optical modulating means (44) for modulating the other light beam in accordance with the electrical signal, a delay means (46) for varying a relative delay between the arrival times at the optical modulating means of the light beam and the electrical signal, and a photodetector (48) having a response speed faster than that of the delay time variation for detecting an output light beam from the optical modulating means (44).
IPC 1-7
IPC 8 full level
G02F 3/00 (2006.01); G01J 1/00 (2006.01); G01J 11/00 (2006.01); G06E 3/00 (2006.01)
CPC (source: EP US)
G01J 11/00 (2013.01 - EP US); G06E 3/005 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0347054 A2 19891220; EP 0347054 A3 19901219; EP 0347054 B1 19930317; DE 68905384 D1 19930422; DE 68905384 T2 19930624; JP 2659554 B2 19970930; JP H0296122 A 19900406; US 4994663 A 19910219
DOCDB simple family (application)
EP 89305319 A 19890525; DE 68905384 T 19890525; JP 13205088 A 19880530; US 35560889 A 19890523